11 GAP ANALYSIS AND MAPPING
In this chapter I will explain how PDMv3 artefacts support the delivery and overcome the challenges of data mapping and data gap fixing. I will also look at the impact Agile working has on the mix of activities performed by the parties involved.
WATERFALL VS AGILE
Everything in the gap analysis and mapping module needs to be performed on any data migration. In a Waterfall setting it is easy to visualise the flow as:
landscape analysis 
gap analysis and mapping migration design and execution legacy decommissioning ...
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